Hypophalangism refers to a condition where a person has abnormally short fingers or toes due to underdeveloped bones. Some synonyms that can be used to refer to this condition include brachydactyly, which refers to short fingers and toes, and adactyly, which means the absence of fingers or toes. Clinodactyly is another synonym that describes fingers or toes that curve to one side due to underdevelopment. Other synonyms include micromelia, which describes abnormally short limbs, and phocomelia, which means truncated limbs due to an underdeveloped limb bud in early pregnancy. While these terms have slightly different meanings, they all refer to conditions that result in abnormal development of the fingers or toes.